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Implement support for loading system fonts on Linux, macOS / iOS and Windows.

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This commit is contained in:
bruvzg
2022-07-08 15:38:30 +03:00
parent 3e0e84a54c
commit 36ef8f29dc
27 changed files with 1089 additions and 54 deletions
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89
platform/linuxbsd/os_linuxbsd.cpp
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@@ -52,6 +52,10 @@
#include <sys/types.h>
#include <unistd.h>
#ifdef FONTCONFIG_ENABLED
#include <fontconfig/fontconfig.h>
#endif
void OS_LinuxBSD::alert(const String &p_alert, const String &p_title) {
const char *message_programs[] = { "zenity", "kdialog", "Xdialog", "xmessage" };
@@ -327,6 +331,91 @@ uint64_t OS_LinuxBSD::get_embedded_pck_offset() const {
return off;
}
Vector<String> OS_LinuxBSD::get_system_fonts() const {
#ifdef FONTCONFIG_ENABLED
HashSet<String> font_names;
Vector<String> ret;
FcConfig *config = FcInitLoadConfigAndFonts();
ERR_FAIL_COND_V(!config, ret);
FcObjectSet *object_set = FcObjectSetBuild(FC_FAMILY, nullptr);
ERR_FAIL_COND_V(!object_set, ret);
static const char *allowed_formats[] = { "TrueType", "CFF" };
for (size_t i = 0; i < sizeof(allowed_formats) / sizeof(const char *); i++) {
FcPattern *pattern = FcPatternCreate();
ERR_CONTINUE(!pattern);
FcPatternAddBool(pattern, FC_SCALABLE, FcTrue);
FcPatternAddString(pattern, FC_FONTFORMAT, reinterpret_cast<const FcChar8 *>(allowed_formats[i]));
FcFontSet *font_set = FcFontList(config, pattern, object_set);
if (font_set) {
for (int j = 0; j < font_set->nfont; j++) {
char *family_name = nullptr;
if (FcPatternGetString(font_set->fonts[j], FC_FAMILY, 0, reinterpret_cast<FcChar8 **>(&family_name)) == FcResultMatch) {
if (family_name) {
font_names.insert(String::utf8(family_name));
}
}
}
FcFontSetDestroy(font_set);
}
FcPatternDestroy(pattern);
}
FcObjectSetDestroy(object_set);
for (const String &E : font_names) {
ret.push_back(E);
}
return ret;
#else
ERR_FAIL_COND_V_MSG(Vector<String>(), "Godot was compiled without fontconfig, system font support is disabled.")
#endif
}
String OS_LinuxBSD::get_system_font_path(const String &p_font_name, bool p_bold, bool p_italic) const {
#ifdef FONTCONFIG_ENABLED
String ret;
FcConfig *config = FcInitLoadConfigAndFonts();
ERR_FAIL_COND_V(!config, ret);
FcObjectSet *object_set = FcObjectSetBuild(FC_FAMILY, FC_FILE, nullptr);
ERR_FAIL_COND_V(!object_set, ret);
FcPattern *pattern = FcPatternCreate();
if (pattern) {
FcPatternAddBool(pattern, FC_SCALABLE, FcTrue);
FcPatternAddString(pattern, FC_FAMILY, reinterpret_cast<const FcChar8 *>(p_font_name.utf8().get_data()));
FcPatternAddInteger(pattern, FC_WEIGHT, p_bold ? FC_WEIGHT_BOLD : FC_WEIGHT_NORMAL);
FcPatternAddInteger(pattern, FC_SLANT, p_italic ? FC_SLANT_ITALIC : FC_SLANT_ROMAN);
FcConfigSubstitute(0, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
FcResult result;
FcPattern *match = FcFontMatch(0, pattern, &result);
if (match) {
char *file_name = nullptr;
if (FcPatternGetString(match, FC_FILE, 0, reinterpret_cast<FcChar8 **>(&file_name)) == FcResultMatch) {
if (file_name) {
ret = String::utf8(file_name);
}
}
FcPatternDestroy(match);
}
FcPatternDestroy(pattern);
}
FcObjectSetDestroy(object_set);
#else
ERR_FAIL_COND_V_MSG(Vector<String>(), "Godot was compiled without fontconfig, system font support is disabled.")
#endif
return ret;
}
String OS_LinuxBSD::get_config_path() const {
if (has_environment("XDG_CONFIG_HOME")) {
if (get_environment("XDG_CONFIG_HOME").is_absolute_path()) {